LAYERED HEAT-INSULATION MATERIAL (OPTIONS) Russian patent published in 2004 - IPC

FIELD: textile industry.

SUBSTANCE: in its first embodiment, invention provides layered heat-insulation material containing at least one nonwoven material layer composed of blend of solid and hollow polyester fibers at their weight ratio within a range of 3:7 to 7:3. Layer or layers of nonwoven material are joined by needle-punched manner with at least one metallized polymer film layer disposed between nonwoven material layers and/or outside. In the second embodiment of invention, layered heat-insulation material contains at least one nonwoven material layer joined by needle-punched manner with at least one metallized polymer film, wherein nonwoven material is made from blend of hollow polyester fibers and flax fibers at their weight ratio within a range of 3:7 to 7:3. Layered materials of invention may be used warmth keepers in clothes and footwear, in sleeping-bags, tourist tents, quilts, and other articles.

EFFECT: enabled variation of desired warmth-keeping conditions.

3 cl